"When you follow your instincts -- Lone Wolf Beer. Puts hair on your chest, and other places too. Warning: May be harmful to your health."
- Deus Ex: Invisible War description

Beer is an alcoholic beverage produced through brewing and fermenting grains such as barley or wheat. The process of brewing sterilizes beer, making it a very popular drink for thousands of years around the world. Beer appears in Deus Ex: Invisible War as Lone Wolf Beer.

In the inventory Beer is labeled as a "vice" along with cigarettes and wine. Beer now hurts the player while applying a "drunk" effect, opposed to in Deus Ex where they would heal the player.